Revert "subtree updates"

Needs to go through CI

This reverts commit fc7e7973f3119e2bad511209aa336537dc5ffbed.
diff --git a/meta-arm/meta-arm-bsp/conf/machine/include/corstone1000.inc b/meta-arm/meta-arm-bsp/conf/machine/include/corstone1000.inc
index 72c0af5..aeb1411 100644
--- a/meta-arm/meta-arm-bsp/conf/machine/include/corstone1000.inc
+++ b/meta-arm/meta-arm-bsp/conf/machine/include/corstone1000.inc
@@ -5,8 +5,6 @@
 # TF-A
 TFA_PLATFORM = "corstone1000"
 EXTRA_IMAGEDEPENDS += "trusted-firmware-a"
-PREFERRED_VERSION_trusted-firmware-a ?= "2.9.%"
-PREFERRED_VERSION_tf-a-tests ?= "2.8.%"
 
 TFA_BL2_BINARY = "bl2-corstone1000.bin"
 TFA_FIP_BINARY = "fip-corstone1000.bin"
@@ -36,8 +34,8 @@
 UBOOT_EXTLINUX = "0"
 
 #optee
-PREFERRED_VERSION_optee-os ?= "3.22%"
-PREFERRED_VERSION_optee-client ?= "3.22%"
+PREFERRED_VERSION_optee-os ?= "3.20.%"
+PREFERRED_VERSION_optee-client ?= "3.18.%"
 EXTRA_IMAGEDEPENDS += "optee-os"
 OPTEE_ARCH = "arm64"
 OPTEE_BINARY = "tee-pager_v2.bin"